Concept

Fracture ouverte

Publications associées (48)

Influence of modelling variables on the distribution of lattice strains in a deformed polycrystal, with reference to neutron diffraction experiments

The distribution of (elastic) lattice strains following plastic deformation of an aluminium alloy is examined using finite element simulations of aggregates with individually resolved crystals. The aggregates consist of face centred cubic crystals with ini ...

2004

Dynamic crack propagation with cohesive elements: a methodology to address mesh dependency

Jean-François Molinari

In this paper, two brittle fracture problems are numerically simulated: the failure of a ceramic ring under centrifugal loading and crack branching in a PMMA strip. A three-dimensional finite element package in which cohesive elements are dynamically inser ...

2004

Mapping of hydraulic fractures from tiltmeter measurements

Brice Tanguy Alphonse Lecampion

In considering the problem of inverse modeling of tiltmeter data for hydraulic fracture mapping, we address the issues of selecting the elastic model to represent the hydraulic fracture and limitations imposed by distance and fracture size on the informati ...

2003

Flow through a convergence : Part 1. Critical Conditions for Unstable Flow

The critical conditions leading to fracture in elongation and different types of flow instabilities were examined in uniaxial elongation and in a capillary rheometer equipped with dies having different entry profiles. Either ductile or brittle fracture may ...

2002

Hydraulic Surgical Cement

Jacques Lemaître, Pascale Van Landuyt

The cement for surgical purposes includes three components. The first component includes beta tertiary calciumphosphate beta-Ca3(PO4)2(beta-TCP) particles; and monocalcium phosphate Ca(H2PO4)2(MCPA) or monocalcium phosphate monohydrate Ca(H2PO4).H2O (MCPM) ...

1997

Tibial component positioning in total knee arthroplasty: bone coverage and extensor apparatus alignment

Dominique Pioletti, Reto Meuli, Pierre-François Leyvraz, Pierre Lemaire

Correct positioning of the tibial component in total knee arthroplasty (TKA) must take into account both an optimal bone coverage (defined by a maximal cortical bearing with posteromedial and anterolateral support) and satisfactory patellofemoral tracking. ...

1997

Influence of soft structures on patellar three-dimensional tracking

Lalaonirina Rakotomanana Ravelonarivo, Pierre-François Leyvraz

During knee flexion, the human patella moves along a complex path resulting from the combined actions of articular contact and soft-tissue stabilization. The current study is an attempt to characterize the role of these soft structures on patellar kinemati ...

Lippincott, Williams & Wilkins1994

PUSH-OUT TESTS ON A NEW SILICON-CARBIDE REACTION-BONDED SILICON-CARBIDE CERAMIC-MATRIX COMPOSITE

William Curtin

Fiber push-out tests have been performed on a ceramic matrix composite consisting of Carborundum sintered SiC fibers, with a BN coating, embedded in a reaction-bonded SiC matrix. Analysis of the push-out data, utilizing the most complete theory presently a ...

1993

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